Electric signaling.



PATENTED JULY 31, 1906.

J. B. STRUBLE. BLBGTRIG SIGNALING.

APPLICATION FILED MARJZ, 1902. RENEWED JUNE 4. 1904.

Att'y.

ila ifllil? Iii! 9 l VENTOR 3mm UNITED STA ES PATENT OFFICE.

JACOB B. STRUBLE, OF WILKINSBURG, PENNSYLVANIA, ASSIGNOR TO THE UNION SWITCH &SSIGNAL COMPANY, OF SWISSVALE, PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.

ELECTRIC SIGNALING.

Specification of Letters Patent.

Patented July 31, 1906.

Application filed March 12.1902. Renewed June 4,1904. Serial No. 211,143.

To all whom it may concern:

Be it known that I, JACOB B. STRUBLE, a citizen of the United States, residing at Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Im rovements in Electric Signaling, of which t e following is a specification.

In an application for Letters Patent, Se-

rial No. 82,523, filed November 16, 1901, I

have described and claimed certam improvements in electric signalin especially applic able to the signaling for e ectric railways, said invention comprising, enerally stated, an alternating current in t e track-circuit and a translatin device included in such circuit and control ing the signal-circuit.

The invention described herein relates to certain improvements in a relay which may be used in the signaling system set forth in the said application.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, Figure 1 is a diagrammatic view illustrative of one form or embodiment of m improvement, and Fig. 2 illustrates a mod cation of the same.

Similar characters of reference designate corres onding parts in both of the figures.

In t e practlce-of my invention one of the lines of rails is divided into a series of blocks or sections 1, 2, and 3 by insulation at suitable points between the ends of adjacent rails at such points, while the other line of rails 4 is made electrically continuous. One terminal of an alternating generator 5 is connected to the rail 4, while the other terminal is connected to each of the rail-sections 1 2, &c. These connections to the rail-section may be direct, as shown in Fig. 1, a suitable resistance 7 being interposed, as shown, or the connections to the sections may be made through the medium of transformers having their secondary coils connected to the railsections, whlle the primary coils are connected in multiple are or in series with the generator 5, as described and shown in my a plication'for patent filed, Serial No. 97,861.

ranslating devices in the form of motor. 'mechamsmssuch, for example, as the relay 9have'their field-coils 18 included in the track-circuits and the movable member or armatures 19 suitably pivoted. In order to control the signal, such control being effected in the construction shown through the medium of an auxiliary circuit, the armature is provided with a contact-arm 22, adapted when the armature is shifted by an alternating current in the track-circuit to bear against the contact-pin 23, said arm and point being included in a circuit 13, which also includes as a art thereof suitable mechanism known in t e art for operating or controlling this signal 14 and also a suitable generator :20.

If while the alternating current is shunted by wheels on section 2 a direct current should flow through the coil or coils 18, the armature 19 would be shifted into alinement with the poles of the magnet 9, such movement being in the direction of movement imparted to the armature by the action of the spring 24 as soon as said spring is allowed to operate by the shunting of the alternating current, so that the action of the direct current on the relay is only cumulative of the action of the spring 24 to open the signal-circuit 13 when the alternating current is shunted. In order to clear the signal when an alternating current is flowing through the coil or coils 18, I rovide suitable means whereby the center 0 the magnetic field is shifted, so that the action of the alternating current in the coils 18 will be to so shift the armature to an angular position, and thereby cause its contact-arm 22 to bear upon the contact-point 23 and close the signal-circuit. This shifting of the center of the magnetic field may be effected, as shown in Fig. 1, by slotting the ends of the armature, thereby forming a tongue 20, around which is placed a closed. circuit formed by turns 21 of wire or metal tapes suitably insulated. In lieu of forming tongues 20 on the ends of the armature, they may be formed in a similar manner at the ends of the poles of the magnet, as shown in Fig. 2, the tongues 2O being surrounded by a closed circuit 21, as in the construction shown inFig. 1.

As a direct current will not induce an operative current in an adjoining circuit, it Will be apparent that so long as a direct current only flows through the coil or coils 18 the center of the magnetic field of the poles of the magnet or the armature will correspond to points a on a median line passing through the.

w re; .5 e. .t. ur p e of the magnet, so that the armature will be shifted into alinement with thepoles ofthe magnet. If, however, an alternating current should be passed through the coil or coils 18, an induced current. will be set up in the closed circuits 21 21 in a direction op osite to the alternating current.

in the coils 8, so that the magnetic field produced in the tongues 20 and in a ortion of the body of the armature or poles o the magnet adjacent to such to ue and of a thick-. ness approximately equa to the thickness of the tongues, as indicated by dotted lines,

will be opposite thatgenerated in the remaining portions of the poles of the ma net and the armature, so that the magnetic eld produced by the. alternating current in the coils 18 will have its center no longer coin-.-

' ciding with the median line of the poles or armature, but will be shifted to one side of such axis approximately to points 11, so that the attractive force thus produced b the alternating currents in the-coils 18 wil tend to shift the armature to an angular position, as shown, bringing the contact-arm against the contact-point 23.

In the construction shown in Fig. 1 the.

tion of the body of the armature adjacent to.

such tongue (indicated by dotted lines) as will neutralize aportion of the magnetic circuit produced by the coil or coils 18. This neutralizing of a portion of the armature amounts practically, as regards the magnetic circuit produced by alternating currents,.to. removing or cutting away aportion of the.

armature and the s ing of the center of attraction of the alternating magnetic field to coincidence with the remaining portion of the ends, and the armature will be brought toangular position, as shown.

In the arrangement shown in Fig. 2 the current is induced in the closed circuits 21 21 directly by the alternating current in the coil or coils 18, and the neutralization of a portion of the poles of a magnet has the same.

eflect as cutting away or removing bodily a portion of such oles, so that the centers of the attraction o the magnetic field of the poles will be shifted to points outside of the median line of the poles and will corres ond toa point=b eccentric to the middle 0 the pole, as shown in Fig. 2.

It is characteristic of either of the constructions shown and described that a direct ourrent will not have any effect toward clearing the signal, which can .be done only by the action of the alternating current, and that a direct current will only act in the same direction as the. spring and only when the alternating current is shunted or is weaker than the direct current.

What I claim as my invention is- 1. A signaling apparatus having in combination a source of alternating currents, a track-circuit in circuit with the source of alternating currents, a motor in circuit with the track-circuit, the movable member of the motor being adapted to control a sigfiial and means for neutra izing a portionof t emagpetifi circuit of the motor, substantially as set ort 2.. A signaling apfparatus having in.-combi-. nation a-source o alternating currents, a track-circuit in circuit with the source of alternating currents, a motor in circuit with the track-circuit, the movable member of the.

motor bein adapted tocontrol a signal, one of the mem ersof the motor having-portions surrounded by closed circuits whereby-a P01: tion of the magnetic circuit may be neutralized when the motor is energized by-an alternating current, substantially asset forth.

3. A signaling ap aratus having in. combis nation a source 0 alternating currents, a track-circuit in;circuit with the source of al-, ternating currents, and a motor includedrin the track-circuit, the movable member of the motor being adapted to control a signal,.the poles of the stationary memberbein provided with tongues surrounded 'byclose circuits, substantially as set forth.

4. A translating device for si aling purposes com rising a field, a mova lemernber actuated t ereby and coils which when excited by an alternating current will cause a shifting of the movable member in one .direction and which when excitedbya direct current and not by an alternating current .will cause a shifting of the movable member .in another direction.

5. A translating device for signaling pur-. poses com rising a field, a movablemember actuated t erebyand coils which-when excited by an alternating current and adirect current simultaneouslywill cause a shiftin of the movablemember in one direction an which when excited by adirect current and not by an alternating current will cause a shift.- ing of the movable member in another direction.

6. A translating device for si naling-purrposes com rising a field, a mova 1e member.

actuated t ereby and coils. arranged toproduce relatively displaced magnetic. fields whenexcitedbyan alternatln currentwhereby-the movable member will e shiftedoin-rem sponse thereto.

7. A track-circuit for signaling purposes comprising track-rails, analternatingcurrent supply, and a translating device, saidtragsr e.

lating device includingafield, and a more i member and coils, some of which are in circuit with the track-rails and arranged to produce relatively displaced magnetic fields whereby the movable member will be shifted in res onse thereto.

8. track-circuit for signaling purposes comprising track-rails, an alternating-current supply and a translating device, said translating device comprising a field, a movable member actuated thereby and coils which when excited by an alternat' current will cause a shifting of the movab e member in one direction and which when excited by a direct current and not by an alternating current will cause a shifting of the movable member in another direction.

9. A track-circuit for signaling purposes my hand.

JACOB B. STRUBLE. Witnesses:

DARWIN S. Wo co'r'r, F. E. GAITHER. 

